Explain the reason for the following:
A primary alkylhalide, RX, reacts with KCN to give an alkyl cyanide and with AgCN to give an alkyl isocyanide as the major, product.

Solution

KCN is ionic in nature so it dissociates completely into K⁺ and CN^- also, C-C bond is more stronger then C-N bond because of this when haloalkanes react with KCN to form alkyl cyanides.
$straight R minus straight X space plus straight K to the power of plus minus CN to the power of minus space rightwards arrow with space space space space space space space space space on top space RCN space plus space KX$

AgCN is convalent in nature thus, it does not dissociate in to Ag⁺ and CN^- and on nitrogen electron density is high thus haloalkane react with AgCN and isocyanide is form.
$straight R minus straight X space plus space AgCN space rightwards arrow with space space space space space space space space space on top stack RNC space with Alkyl space isocyanide below plus AgX$

Some More Questions From Haloalkanes and Haloarenes Chapter

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Haloalkanes And Haloarenes

Explain the reason for the following:
A primary alkylhalide, RX, reacts with KCN to give an alkyl cyanide and with AgCN to give an alkyl isocyanide as the major, product.

Some More Questions From Haloalkanes and Haloarenes Chapter

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i) A single monochloride.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Arrange each set of compounds in order of increasing boiling points:
Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

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Haloalkanes And Haloarenes

Explain the reason for the following:A primary alkylhalide, RX, reacts with KCN to give an alkyl cyanide and with AgCN to give an alkyl isocyanide as the major, product.

Some More Questions From Haloalkanes and Haloarenes Chapter

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:i) A single monochloride.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C5H12, identify the one that on photochemical chlorination yields:Four isomeric monochlorides.

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Draw the structures of major monohalo products in each of the following reactions:

Arrange each set of compounds in order of increasing boiling points:Bromomethane, Bromoform, Chloro-methane, Dibromomethane.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Explain the reason for the following:
A primary alkylhalide, RX, reacts with KCN to give an alkyl cyanide and with AgCN to give an alkyl isocyanide as the major, product.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i) A single monochloride.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:

i)Three isomeric monochlorides.

Among the isomeric alkanes of molecular formula C₅H₁₂, identify the one that on photochemical chlorination yields:
Four isomeric monochlorides.

Arrange each set of compounds in order of increasing boiling points:
Bromomethane, Bromoform, Chloro-methane, Dibromomethane.